Abstract:
INTRODUCTION:Although there are numerous protocols to adjust the amplitude of the Hoffmann reflex (H-reflex) relative to the size of the direct motor response (M-response), the optimal stimulating location has not been described. We sought to determine the optimal positioning of the stimulating cathode when evoking the tibial nerve H-reflex and M-response. METHODS:A small cathode was placed on defined points in the popliteal fossa while an anode was fixed on the patella. The tibial nerve was stimulated electrically, and the response of the soleus muscle was recorded using intramuscular and surface electromyography. RESULTS:We found that more-lateral points along a line drawn across the popliteal fossa were the best locations to obtain only the M-response, whereas stimulating the midpoint was optimal for obtaining only the H-reflex. DISCUSSION:By using specified locations for electrical stimulation to evoke H-reflex and M-response, the functionality of the tibial nerve can be assessed. Muscle Nerve 58:828-833, 2018.
journal_name
Muscle Nervejournal_title
Muscle & nerveauthors
Özyurt MG,Shabsog M,Dursun M,Türker KSdoi
10.1002/mus.26308subject
Has Abstractpub_date
2018-12-01 00:00:00pages
828-833issue
6eissn
0148-639Xissn
1097-4598journal_volume
58pub_type
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